diff options
| -rw-r--r-- | configs/common/Simulation.py | 19 | ||||
| -rw-r--r-- | configs/common/SysPaths.py | 5 | ||||
| -rw-r--r-- | src/python/m5/__init__.py | 3 | ||||
| -rw-r--r-- | src/sim/host.hh | 2 | ||||
| -rw-r--r-- | src/sim/main.cc | 12 |
5 files changed, 20 insertions, 21 deletions
diff --git a/configs/common/Simulation.py b/configs/common/Simulation.py index d88373d54..a67159a50 100644 --- a/configs/common/Simulation.py +++ b/configs/common/Simulation.py @@ -27,6 +27,7 @@ # Authors: Lisa Hsu from os import getcwd +from os.path import join as joinpath import m5 from m5.objects import * m5.AddToPath('../common') @@ -64,7 +65,7 @@ def run(options, root, testsys, cpu_class): print "simulating for: ", simtime maxtick = simtime else: - maxtick = -1 + maxtick = m5.MaxTick if options.checkpoint_dir: cptdir = options.checkpoint_dir @@ -149,7 +150,7 @@ def run(options, root, testsys, cpu_class): m5.panic('Checkpoint %d not found' % cpt_num) m5.restoreCheckpoint(root, - "/".join([cptdir, "cpt.%s" % cpts[cpt_num - 1]])) + joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1])) if options.standard_switch or cpu_class: exit_event = m5.simulate(10000) @@ -184,13 +185,13 @@ def run(options, root, testsys, cpu_class): exit_event = m5.simulate(when - m5.curTick()) if exit_event.getCause() == "simulate() limit reached": - m5.checkpoint(root, "/".join([cptdir,"cpt.%d"])) + m5.checkpoint(root, joinpath(cptdir, "cpt.%d")) num_checkpoints += 1 sim_ticks = when exit_cause = "maximum %d checkpoints dropped" % max_checkpoints while num_checkpoints < max_checkpoints: - if (sim_ticks + period) > maxtick and maxtick != -1: + if (sim_ticks + period) > maxtick: exit_event = m5.simulate(maxtick - sim_ticks) exit_cause = exit_event.getCause() break @@ -200,24 +201,20 @@ def run(options, root, testsys, cpu_class): while exit_event.getCause() == "checkpoint": exit_event = m5.simulate(sim_ticks - m5.curTick()) if exit_event.getCause() == "simulate() limit reached": - m5.checkpoint(root, "/".join([cptdir,"cpt.%d"])) + m5.checkpoint(root, joinpath(cptdir, "cpt.%d")) num_checkpoints += 1 else: #no checkpoints being taken via this script exit_event = m5.simulate(maxtick) while exit_event.getCause() == "checkpoint": - m5.checkpoint(root, "/".join([cptdir,"cpt.%d"])) + m5.checkpoint(root, joinpath(cptdir, "cpt.%d")) num_checkpoints += 1 if num_checkpoints == max_checkpoints: exit_cause = "maximum %d checkpoints dropped" % max_checkpoints break - if maxtick == -1: - exit_event = m5.simulate(maxtick) - else: - exit_event = m5.simulate(maxtick - m5.curTick()) - + exit_event = m5.simulate(maxtick - m5.curTick()) exit_cause = exit_event.getCause() if exit_cause == '': diff --git a/configs/common/SysPaths.py b/configs/common/SysPaths.py index 2070d11f8..c61c9962e 100644 --- a/configs/common/SysPaths.py +++ b/configs/common/SysPaths.py @@ -30,6 +30,9 @@ import os, sys from os.path import isdir, join as joinpath from os import environ as env +config_path = os.path.dirname(os.path.abspath(__file__)) +config_root = os.path.dirname(config_path) + def disk(file): system() return joinpath(disk.dir, file) @@ -60,7 +63,7 @@ def system(): if not disk.dir: disk.dir = joinpath(system.dir, 'disks') if not script.dir: - script.dir = joinpath(system.dir, 'boot') + script.dir = joinpath(config_root, 'boot') system.dir = None binary.dir = None diff --git a/src/python/m5/__init__.py b/src/python/m5/__init__.py index 42abfe2cc..579562b38 100644 --- a/src/python/m5/__init__.py +++ b/src/python/m5/__init__.py @@ -39,6 +39,9 @@ from cc_main import simulate, SimLoopExitEvent # import the m5 compile options import defines +# define a MaxTick parameter +MaxTick = 2**63 - 1 + # define this here so we can use it right away if necessary def panic(string): print >>sys.stderr, 'panic:', string diff --git a/src/sim/host.hh b/src/sim/host.hh index 9c79580b1..a2faa206b 100644 --- a/src/sim/host.hh +++ b/src/sim/host.hh @@ -56,7 +56,7 @@ typedef int64_t Counter; */ typedef int64_t Tick; -const Tick MaxTick = (1LL << 62); +const Tick MaxTick = (1LL << 63) - 1; /** * Address type diff --git a/src/sim/main.cc b/src/sim/main.cc index 133141e57..5b44102a8 100644 --- a/src/sim/main.cc +++ b/src/sim/main.cc @@ -309,18 +309,14 @@ finalInit() * @return The SimLoopExitEvent that caused the loop to exit. */ SimLoopExitEvent * -simulate(Tick num_cycles = -1) +simulate(Tick num_cycles = MaxTick) { warn("Entering event queue @ %d. Starting simulation...\n", curTick); - // Fix up num_cycles. Special default value -1 means simulate - // "forever"... schedule event at MaxTick just to be safe. - // Otherwise it's a delta for additional cycles to simulate past - // curTick, and thus must be non-negative. - if (num_cycles == -1) - num_cycles = MaxTick; - else if (num_cycles < 0) + if (num_cycles < 0) fatal("simulate: num_cycles must be >= 0 (was %d)\n", num_cycles); + else if (curTick + num_cycles < 0) //Overflow + num_cycles = MaxTick; else num_cycles = curTick + num_cycles; |